<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script type="text/javascript">
    var date = new Date()
    document.write(date)
    var year = date.getFullYear();
    // 月份是从0开始的
    var month = date.getMonth() + 1;
    var day = date.getDate();//日
    var hour = date.getHours();
    var minutes = date.getMinutes();
    var second = date.getSeconds();
    var ms = date.getMilliseconds();

    document.write('<br>')
    document.write(year + '-' + month
        + '-' + day + '-' + hour + "-"
        + minutes + '-' + second + "-" + ms)
</script>
</body>
</html>